ScreenToGif.Modern.CallBackFilter C# (CSharp) Method

        private void CallBackFilter(IAsyncResult r)
        {
            filterDel.EndInvoke(r);

            this.Invoke((Action)delegate
            {
                pictureBitmap.Image = _listFramesEdit[trackBar.Value].From();
                panelEdit.Enabled = true;
                panelBottom.Enabled = true;
                GC.Collect();

                this.Cursor = Cursors.Default;
            });
        }